Question

Will the following reaction result in a precipitate? If so, identify the precipitate.

Cal2+Fe(NO3)2→Ca(NO3)2+Fel2
Cal
2
+
Fe
NO
3
2
→
Ca
NO
3
2
+
Fel
2


Yes, Ca(NO3)2 will precipitate.

Yes, Fel2 will precipitate.

No, a precipitate will not form

Answer 1

To determine whether a precipitate will form in the given reaction, we need to analyze the solubility of the products formed.

The reaction is:
\[ \text{CaI}_2 + \text{Fe(NO}_3)_2 \rightarrow \text{Ca(NO}_3)_2 + \text{FeI}_2 \]

1. **Calcium Nitrate (Ca(NO3)2)**: This salt is soluble in water.
2. **Iron(II) Iodide (FeI2)**: Generally, iodides are soluble, but FeI2 is one of the exceptions and can precipitate under certain conditions.

Thus, in this reaction, the potential precipitate is **FeI2**, assuming concentrations are such that it exceeds its solubility.

**Conclusion**: Yes, \(\text{FeI}_2\) will precipitate.